US4892204A - Automatic coupler control system - Google Patents
Automatic coupler control system Download PDFInfo
- Publication number
- US4892204A US4892204A US07/202,085 US20208588A US4892204A US 4892204 A US4892204 A US 4892204A US 20208588 A US20208588 A US 20208588A US 4892204 A US4892204 A US 4892204A
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- US
- United States
- Prior art keywords
- electric
- vehicles
- vehicle
- coupling
- switch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61G—COUPLINGS; DRAUGHT AND BUFFING APPLIANCES
- B61G5/00—Couplings for special purposes not otherwise provided for
- B61G5/06—Couplings for special purposes not otherwise provided for for, or combined with, couplings or connectors for fluid conduits or electric cables
Definitions
- This invention relates to coupling systems for railway vehicles and in particular to a novel and improved system that provides isolation of the electric and pneumatic lines of a vehicle from its corresponding electric and/or pneumatic intervehicle coupling elements as well as from its corresponding battery when required.
- isolation is required, for example, when the vehicle is uncoupled and/or during coupling and/or uncoupling operations. Isolation may also be required between an onboard battery and a particular circuit line when such circuit line is involved in a train line loop test.
- a typical prior art coupling system is the H2C unit of WABCO, Inc. of Wilmerding, Pennsylvania.
- WABCO, Inc. of Wilmerding, Pennsylvania.
- corresponding electric pin connectors of two vehicles are brought into mating electric contact while hot (connected to a source of electric energy). That is, supply voltages and/or signal conditions are actually present on th connectors of one or both of the vehicles.
- the battery voltage connectors Particularly troublesome in the H2C unit are the battery voltage connectors. Should a vehicle with a live battery to be coupled to a vehicle with a dead battery, the live battery will try to charge the dead battery. This results in a current draw in excess of 75 amperes through the coupler contacts, which if continued for any length of time can result in damage to the coupler contacts. The only way to stop this condition is to uncouple the vehicles or retract the electric coupler portions.
- Another prior art coupling system is the Form 73 Coupler Equipment of Ohio Brass Co. of Mansfield, Ohio.
- This system includes a control mechanism that serves to isolate the electric and pneumatic lines of a vehicle from its corresponding electric and pneumatic interfaces when the vehicle is uncoupled.
- the electric coupling contacts upon engagement initiate a coupling cycle.
- This action causes an electric signal to be generated that, after a three second delay to assure against false signals, is operative to couple the vehicle electric and pneumatic lines to the vehicle's electric and pneumatic interfaces.
- a problem with the Form 73 Coupler Equipment is that the interface connector associated with the onboard battery power is hot at the time the two electric interfaces come into electric engagement. This results in voltage arcs and, hence, reduced contact life.
- a requirement for coupling systems is that the onboard battery be isolated from onboard electric circuits when the vehicle is uncoupled. This has been achieved in the above prior art couplers by routing battery power across the electric interface, through a loop on the adjacent vehicle and then back through the interface. This required a dedication of at least four connectors per electric interface in the Form 73 Coupler Equipment.
- An object of the present invention is to provide a novel and improved coupler for railway vehicles.
- Another object of the present invention is to provide a novel and improved coupler system that effectively isolates the electric and pneumatic lines of two vehicles from one another until the two vehicles are actually coupled together.
- Still another object of the present invention is to provide a novel and improved coupler system that requires only two dedicated connectors per electric interface to achieve onboard battery isolation.
- Yet another object is to provide a novel and improved electric system for railway vehicles that isolates onboard battery power of intermediate vehicles from a test loop distributed over a train of such vehicles.
- a coupling system embodying the invention is adapted to railway vehicles in which first and second vehicles have mating mechanical elements for mechanical coupling the two vehicles and electric interfaces for electrically interconnecting the electric onboard conductors of the two vehicles.
- Each electric interface contains an electric connector in circuit with one of its associated onboard conductors. Corresponding connectors of the two interfaces come into electric contact with one another during a coupling operation.
- a first switch means is coupled in circuit with the onboard conductors of the first vehicle so as to maintain such conductors in an open circuit when the vehicle is uncoupled.
- an electric signal is produced which is operative to close the first switch so as to provide electric continuity in the conductors of the first vehicle after a delay that allows the connectors of the two interfaces to come into good electric contact during the coupling operation.
- the coupling system is adapted for railway vehicles in which each vehicle has a first electric line adapted for coupling to a battery and a secondary electric line adapted for connection to electric circuits and an electric coupling that interconnects such lines to which the two vehicles are coupled.
- An electric isolation means is provided for each vehicle so as to isolate the battery of each vehicle from its corresponding second line and electric circuits when the two vehicles are uncoupled while providing electric continuity therebetween when the two vehicles are coupled.
- This isolation means comprises a diode connected between the corresponding first and second lines with a polarity to isolate the battery from its corresponding second line.
- the electric coupling elements of the two vehicles mate in the coupling condition so as to provide a connection of the first and second lines of the first vehicles with the second and first lines, respectively, of the second vehicle.
- the battery of the first vehicle is coupled to its corresponding second line via the two electric coupling elements and the second line and diode of the second vehicle.
- FIG. 1 is a perspective view illustrating a portion of the mechanical coupling elements of two railway vehicles as well as the placement of a sensor switch according to the present invention
- FIG. 2 is a side elevational view of the mating mechanical coupler hooks of FIG. 1 together with a portion of the sensor switch;
- FIG. 3 is a block diagram of a coupling system embodying the present invention.
- FIG. 4 is a block diagram of the coupler control box of FIG. 3;
- FIG. 5 is a schematic circuit diagram of circuitry for one of the uncoupling switch operations of FIG. 4;
- FIG. 6 is a block diagram in part and a circuit diagram in part of a loop test circuit extending along the train in accordance with another feature of the invention.
- FIGS. 1 to 3 a coulping system embodying the invention is illustrated for three railway vehicles or cars identified by dashed lines in FIG. 3 as Car 0, Car 1, and Car 2, it being understood that there could be a lesser or greater number of cars coupled in a train. Since the coupling system for each of the cars is identical, only the coupling elements for car 1 are illustrated in detail with selected elements from Cars 0 and 2 being shown for clarity. Structural elements that are identical in FIG. 1-3 but located in different cars are identified by the numerical suffix 0,1 or 2 for Cars 0, 1 or 2 respectively. For the most part, the ensuing description will be directed to the coupling system elements found in Car 1.
- the coupling system for each vehicle includes at each end a mechanical coupling element 10-1 (FIG. 1), an electric coupling element 11-1 (FIG. 3) and a pneumatic coupling element 12-1 (FIG. 3).
- the electric and pneumatic elements are further distinguished by the letters L for the left-hand end of the car and R for the right-hand end of the car.
- the left-hand couplers 11-1L and 12-1L of car 1 mate with right-hand couplers 11-OR and 12-OR of Car 0.
- the right-hand couplers of 11-1R and 12-1R of Car 1 mate with the left-hand couplers 11-2L and 12-2L of Car 2.
- the electric couplers include the necessary electric connectors to interconnect the electric lines 13 of the cars while the pneumatic couplers include the necessary pneumatic connectors to interconnect the pneumatic lines 14 of the cars.
- Onboard electric functions 15 are interconnected with the electric lines 13 and onboard pneumatic functions 16 are interconnected with the pneumatic lines 14. These functions include, for example, electric lights, warning systems, air brakes and the like.
- Car 1 includes a pair of coupler control boxes 17-1L and 17-1R which are arranged to isolate the electric lines and functions from the electric coupler interfaces 11 and to control the isolation of the pneumatic lines from the pneumatic coupler interfaces 12 when Car 1 is uncoupled from either Car 0 or Car 2, as the case may be.
- coupler control box 17-1L provides the isolation function between electric lines 13 and the electric coupler interface 11-1L.
- Coupler control box 17-1L further provides a control signal to pneumatic shut off valves 50-1L to control isolation of pneumatic lines 14 from the pneumatic coupler 12-1L.
- coupler control box 17-1R provides isolation between the lines 13 and 14 and electric and pneumatic coupler interfaces 11-1R.
- Coupler control box 17-1R further provides a control signal to pneumatic shut off valves 50-1R to control isolation of pneumatic lines 14 from pneumatic coupler 12-1R.
- hook switch 18-1L or 18-1R serves to connect the onboard battery power B+to the corresponding coupler control box for initiation of a coupling operation only when Car 1 is actually coupled to Car 0 or Car 2, as the case may be.
- hook switch 18-1L is of a metal detector type that is located in the mechanical element structure so as to detect the mating mechanical hook element of an adjacent car only when in the coupled position.
- hook switch 18-1L is illustrated in FIG. 1 as being positioned in the mechanical hook element housing structure 21-1L above the space 22-1L into which the mating mechanical hook 10-0R of Car 0 will enter during a coupling operation.
- the switch itself is a combination inductive proximity sensor and switch that has a reactance which changes as metal enters its effective range.
- the sensor and switch element 18 is a Series 90 Proximity Sensor available from Micro Switch of Freeport, IL.
- mechanical hook element 10-0R of Car 0 is illustrated in two positions. In the first position, indicated by the solid lines, it is partially within the space 22-1L and outside the effective range of the switch 18-1L. In the second position, indicated by the dashed lines the hook element 10-0R is fully within the space 22-1L and in mechanical engagement with hook 10-1L of Car 1. In this position, hook element 10-0R is within the effective range of the sensor switch 18-1L. The reactance of the switch will change and provide a closed electric circuit.
- the hook switch 18-1L is connected electrically in series with the onboard battery B+, voltage regulator 19-1L and diode 20-OR of Car 0. With hook switch 18-1L closed (Cars -0 and 1 coupled together), this circuit will apply the regulated voltage VR1 to coupler control box 17-1L. This voltage VRI is used by the coupler control box to initiate a coupling cycle. The output voltage VR2 of voltage regulator 19-1L is also applied to coupler box 17-1L to provide a power supply for the circuits therein.
- circuitry involving the diodes 20-1L and 20-OR provides isolation of the voltage VRI from its associated coupler control box when the associated car is uncoupled and uses only two connector pins per electric coupler. This is accomplished by routing the Car 1 voltage of VR1 signal from hook switch 18-1L via lead 23-12L and electric coupler 11-1L to a loop on Car 0 where it is looped back through coupler 11-0R to coupler 11-1L and then via lead 23 11L to the coupler control box 17-1L.
- the loop on Car 0 includes lead 23-01R, diode 20-0R and lead 23-02R. In this circuit, the lead functions on either side of the electric coupler interface are reversed.
- lead 23-11L (Car 1) is connected via couplers 11-1L and 11-0R to lead 23-02R on the Car 0 side.
- lead 23-12L (Car 1 side) is connected via the electric couplers to lead 23-01R on the Car 0 side.
- FIG. 4 illustrates a coupler control box.
- the regulated voltage VR2 is used as a power supply for an interval timer 30, coupling solenoid valve 31, uncoupling switches 32 and uncoupling solenoid valve 33.
- the interval timer 30 is responsive to the leading edge of the VR1 signal to generate (after a suitable delay to allow for false signals) a coupling cycle signal (of say, 15 seconds in duration) which serves to operate a coupling solenoid valve 31.
- the coupling solenoid valve 31 in operable in response thereto to operate rotary switch 34 from an open to a closed position so as to connect the onboard electric lines 13 in circuit with the associated electric coupler interface so as to provide electric continuity with the adjacent or mating car in the coupling operation.
- Coupling solenoid valve 31 is also operable to cause pneumatic control 35 to actuate the pneumatic shut off valves 50-1L or 50-1R, as the case may be, resulting in the coupling of the onboard pneumatic lines 14 to the associated pneumatic coupler to thereby provide pneumatic continuity with the adjacent or mating car in the coupling operation.
- FIG. 4 components are known elements functioning in a known manner and form no part of the present invention except as described below and illustrated in FIG. 5. Accordingly, they will not be described further.
- the uncoupling switches of FIG. 4 include the FIG. 5 series connected switches arranged to assure that the pin connectors of the associated electric coupler interface will not be hot when the associated car end is uncoupled.
- the FIG. 5 circuit includes switch 36 which is closed when the associated car end is uncoupled and switch 37 which is closed when the associated rotary switch is closed. This assures that when a car end is uncoupled, the uncoupling solenoid valve will be automatically operated to disconnect the onboard electric and pneumatic lines for the associated electric and pneumatic coupler interfaces of that car end.
- the switch 37 may essentially be one of the contact positions of the rotary switch 34.
- the switch 36 is associated with the electric coupling elements of the electric coupler. (The switch consists of two coupler contacts, one fixed and one moveable, connected by a moveable contact bar when the electric portion is uncoupled. When coupled, the contact bar physically moves to break the connection between the two contacts.)
- FIG. 6 circuit serves to isolate onboard battery power of any car from a test loop distributed among the cars of an N Car train.
- the test loop illustrated in FIG. 6 may, for instance, be testing for closed doors in Cars 1 through N and, Car 1 being the lead car and Car N the trailing car. If all doors are closed, the train can safely start motion.
- Each car is provided at each of its ends with a switch pair 42, a closed door indictor 40 and a switch 43 arranged to connect the associated switch pair in series with either the closed door indicator or B+.
- the test loop includes in a series circuit the closed door indicator 40-1L of Car 1 (the lead car), the switch contact 43-1L, the switch pair 42-1L1 and 42-1L2 in and closed door switches 41-1 . . . 41-N and the battery power of the trailing end of Car N.
- the closed door indicator in Car 1 will yield a closed door signal signifying that the train can safely start motion.
- FIG. 6 illustrates that the battery power of the individual cars is adapted for connection in circuit to either side of the associated closed door switch via the associated switch pairs 42.
- Car N has a left-hand circuit 42-NL and a right-hand circuit 42-NR on the respective sides of switch 41-N. Each such circuit includes a pair of series connected switches.
- circuit 42-NR includes switches 32-NR1 and 42-NR2, both being illustrated in the closed position.
- Switch 42-NR-1 is closed when the associated rotary switch (34 in FIG. 4) is open and switch 42-NR2 is closed when the associated car end is uncoupled. Both of these conditions prevail for the right-hand end of Car N since it is the last or trailing car in the train.
- switches 41-1L1 and 41-1L2 are also illustrated in the closed position.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
Description
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US07/202,085 US4892204A (en) | 1988-06-02 | 1988-06-02 | Automatic coupler control system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/202,085 US4892204A (en) | 1988-06-02 | 1988-06-02 | Automatic coupler control system |
Publications (1)
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US4892204A true US4892204A (en) | 1990-01-09 |
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US07/202,085 Expired - Lifetime US4892204A (en) | 1988-06-02 | 1988-06-02 | Automatic coupler control system |
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Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2661383A1 (en) * | 1990-04-27 | 1991-10-31 | Scharfenbergkupplung Gmbh | COUPLING AND UNCOUPLING DEVICE FOR AN ELECTRICAL CONNECTION OF CABLES AND A MECHANICAL CENTER PAD HITCH ON RAIL VEHICLES, AND SWITCHING DEVICE FOR ACTUATING THIS DEVICE. |
US5152410A (en) * | 1991-09-09 | 1992-10-06 | Westinghouse Air Brake Company | Electro-pneumatic coupler control system for ensuring the safe uncoupling of railway vehicles |
US5455465A (en) * | 1993-11-04 | 1995-10-03 | Alcatel Canada, Inc. | Rapid transit car electrical coupling apparatus and method |
US5673876A (en) * | 1996-03-26 | 1997-10-07 | New York Air Brake Corporation | Automatic electric trainline safety interlock |
US5907193A (en) * | 1997-04-14 | 1999-05-25 | New York Air Brake Corporation | Trainline polarity detector with power source polarity switching |
US6173849B1 (en) | 1998-07-21 | 2001-01-16 | New York Air Brake Corporation | Termination of power and communications trainline of electro-pneumatic brakes |
US6433445B1 (en) * | 2000-01-06 | 2002-08-13 | International Business Machines Corporation | Active mating connector |
US6581791B2 (en) | 2001-08-22 | 2003-06-24 | New York Air Brake | Mounting block assembly for electrical interconnection between rail cars |
US20070145196A1 (en) * | 2005-12-23 | 2007-06-28 | Davenport David M | System and method for determining whether a locomotive or rail engine is coupled to a rail car or other engine |
US20100085058A1 (en) * | 2008-10-02 | 2010-04-08 | New York Air Brake Corporation | Trainline integrity locomotive test device |
US20100148013A1 (en) * | 2005-12-23 | 2010-06-17 | General Electric Company | System and method for optical locomotive decoupling detection |
EP2476573A3 (en) * | 2011-01-14 | 2015-11-18 | John Kinghorn | Energy management system for trains with flexible formations incorporating regenerative braking |
US20170137043A1 (en) * | 2015-11-12 | 2017-05-18 | Trapeze Software Ulc | Method and system for rail vehicle coupling determination |
US10435046B2 (en) * | 2017-04-18 | 2019-10-08 | Qingdao Sri Technology Co., Ltd. | Coupler uncoupling control mechanism |
US20200189631A1 (en) * | 2018-12-17 | 2020-06-18 | Westinghouse Air Brake Technologies Corporation | Device, System, and Method for Monitoring a Distance between Rail Cars during Coupling |
WO2021028136A1 (en) | 2019-08-12 | 2021-02-18 | Voith Patent Gmbh | Automatic air coupling for a rail vehicle |
CN113799844A (en) * | 2021-09-29 | 2021-12-17 | 中车南京浦镇车辆有限公司 | Full-automatic coupling and uncoupling control method and device for car coupler |
CN115066361A (en) * | 2020-02-11 | 2022-09-16 | 福伊特专利有限公司 | Automatic air coupling for rail vehicles |
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Cited By (33)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2661383A1 (en) * | 1990-04-27 | 1991-10-31 | Scharfenbergkupplung Gmbh | COUPLING AND UNCOUPLING DEVICE FOR AN ELECTRICAL CONNECTION OF CABLES AND A MECHANICAL CENTER PAD HITCH ON RAIL VEHICLES, AND SWITCHING DEVICE FOR ACTUATING THIS DEVICE. |
US5139158A (en) * | 1990-04-27 | 1992-08-18 | Scharfenbergkupplung Gmbh | Coupling and uncoupling device for an electrical cable coupling and a mechanical middle buffer coupling for rail-borne vehicles, as well as a switching device for actuating the coupling and uncoupling device for coupling and uncoupling |
BE1004722A3 (en) * | 1990-04-27 | 1993-01-19 | Scharfenbergkupplung Gmbh | Clutch and device for an electrical connector uncoupling cables and central buffer coupling mechanical rail vehicles and switching device for operating the device. |
US5152410A (en) * | 1991-09-09 | 1992-10-06 | Westinghouse Air Brake Company | Electro-pneumatic coupler control system for ensuring the safe uncoupling of railway vehicles |
US5455465A (en) * | 1993-11-04 | 1995-10-03 | Alcatel Canada, Inc. | Rapid transit car electrical coupling apparatus and method |
US5673876A (en) * | 1996-03-26 | 1997-10-07 | New York Air Brake Corporation | Automatic electric trainline safety interlock |
US5907193A (en) * | 1997-04-14 | 1999-05-25 | New York Air Brake Corporation | Trainline polarity detector with power source polarity switching |
US6173849B1 (en) | 1998-07-21 | 2001-01-16 | New York Air Brake Corporation | Termination of power and communications trainline of electro-pneumatic brakes |
AU741084B2 (en) * | 1998-07-21 | 2001-11-22 | New York Air Brake Llc | Termination of power and communications trainline of electro-pneumatic brakes |
US6433445B1 (en) * | 2000-01-06 | 2002-08-13 | International Business Machines Corporation | Active mating connector |
US6581791B2 (en) | 2001-08-22 | 2003-06-24 | New York Air Brake | Mounting block assembly for electrical interconnection between rail cars |
US20030234234A1 (en) * | 2001-08-22 | 2003-12-25 | New York Air Brake Corporation | Lanyard and lanyard with an electrical cable |
US6745910B2 (en) | 2001-08-22 | 2004-06-08 | New York Air Brake Corporation | Mounting block assembly for electrical interconnection between rail cars |
US6871732B2 (en) | 2001-08-22 | 2005-03-29 | New York Air Brake Corporation | Lanyard and lanyard with an electrical cable |
US20100148013A1 (en) * | 2005-12-23 | 2010-06-17 | General Electric Company | System and method for optical locomotive decoupling detection |
US20070145196A1 (en) * | 2005-12-23 | 2007-06-28 | Davenport David M | System and method for determining whether a locomotive or rail engine is coupled to a rail car or other engine |
US7845504B2 (en) * | 2005-12-23 | 2010-12-07 | General Electric Company | System and method for determining whether a locomotive or rail engine is coupled to a rail car or other engine |
AU2006331496B2 (en) * | 2005-12-23 | 2012-11-08 | General Electric Company | System and method for determining whether a locomotive or rail engine is coupled to a rail car or other engine |
AU2006331496B8 (en) * | 2005-12-23 | 2012-11-29 | General Electric Company | system and method for determining whether a locomotive or rail engine is coupled to a rail car or other engine |
US20100085058A1 (en) * | 2008-10-02 | 2010-04-08 | New York Air Brake Corporation | Trainline integrity locomotive test device |
US8115493B2 (en) | 2008-10-02 | 2012-02-14 | New York Air Brake Corporation | Trainline integrity locomotive test device |
EP2476573A3 (en) * | 2011-01-14 | 2015-11-18 | John Kinghorn | Energy management system for trains with flexible formations incorporating regenerative braking |
US10112632B2 (en) * | 2015-11-12 | 2018-10-30 | Trapeze Software Ulc | Method and system for rail vehicle coupling determination |
US20170137043A1 (en) * | 2015-11-12 | 2017-05-18 | Trapeze Software Ulc | Method and system for rail vehicle coupling determination |
US10435046B2 (en) * | 2017-04-18 | 2019-10-08 | Qingdao Sri Technology Co., Ltd. | Coupler uncoupling control mechanism |
US20200189631A1 (en) * | 2018-12-17 | 2020-06-18 | Westinghouse Air Brake Technologies Corporation | Device, System, and Method for Monitoring a Distance between Rail Cars during Coupling |
WO2021028136A1 (en) | 2019-08-12 | 2021-02-18 | Voith Patent Gmbh | Automatic air coupling for a rail vehicle |
DE102019121649A1 (en) * | 2019-08-12 | 2021-02-18 | Voith Patent Gmbh | Automatic air coupling for a rail vehicle |
CN114222692A (en) * | 2019-08-12 | 2022-03-22 | 福伊特专利有限公司 | Automatic air coupling for rail vehicles |
CN115066361A (en) * | 2020-02-11 | 2022-09-16 | 福伊特专利有限公司 | Automatic air coupling for rail vehicles |
CN115066361B (en) * | 2020-02-11 | 2024-03-26 | 福伊特专利有限公司 | Automatic air coupling for rail vehicles |
CN113799844A (en) * | 2021-09-29 | 2021-12-17 | 中车南京浦镇车辆有限公司 | Full-automatic coupling and uncoupling control method and device for car coupler |
CN113799844B (en) * | 2021-09-29 | 2022-08-12 | 中车南京浦镇车辆有限公司 | Full-automatic coupling and uncoupling control method and device for car coupler |
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